If you have no idea what HEN or LCFW means or are lost at the terminologies, be sure to read the Terms and Definitions part of the guide. If you want to upgrade to 6.39 OFW, follow this guide.

For this guide, you have several options but are limited by the model of your PSP. This is because some PSP models cannot be downgraded beyond a certain point. If you need help identifying your PSP, please refer to this guide.